ExceedMaxDim.java revision 9330:8b1f1c2a400f 
1/*
2 * Copyright (c) 1998, 2013, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24/* @test
25 * @bug 4100814 7044282
26 * @summary Make sure you can't create an array of dimension > 256.
27 */
28
29import java.lang.reflect.Array;
30
31public class ExceedMaxDim {
32
33    public static void main(String[] args) throws Exception {
34        newInstanceOne();
35        newInstanceMulti();
36        zeroDimension();
37    }
38
39    private static void newInstanceOne() throws Exception {
40        Object o = getArrayOf256Dimensions();
41        try {
42            o = Array.newInstance(o.getClass(), 1);
43        } catch (IllegalArgumentException iae) {
44            System.out.println("success: newInstanceOne test");
45            return;
46        }
47        throw new Exception("NewArray allowed dimensions > MAXDIM");
48    }
49
50    private static void newInstanceMulti() throws Exception {
51        Object o = getArrayOf256Dimensions();
52        try {
53            o = Array.newInstance(o.getClass(), new int[] { 1, 1 });
54            o = Array.newInstance(o.getClass(), new int[] { 1 });
55        } catch (IllegalArgumentException iae) {
56            System.out.println("success: newInstanceMulti test");
57            return;
58        }
59        throw new Exception("MultiNewArray allowed dimensions > MAXDIM");
60    }
61
62    private static void zeroDimension() throws Exception {
63        try {
64            Array.newInstance(Integer.TYPE, new int[0]);
65        } catch (IllegalArgumentException iae) {
66            System.out.println("success: zeroDimension test");
67            return;
68        }
69        throw new Exception("MultiNewArray allowed dimension == 0");
70    }
71
72    private static Object getArrayOf256Dimensions() {
73        /* 1 dimension */
74        Object o = Array.newInstance(Integer.TYPE, 0);
75
76        /* 254 more dimension. */
77        for (int i = 1; i <= 254; i++) {
78            o = Array.newInstance(o.getClass(), 1);
79        }
80
81        /* 255 in all. */
82        return o;
83    }
84}
85